Issue 87
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Avantone Pro CLA-400 Studio Reference Amplifier

Avantone Pro puts out 800W of reference-grade power with all-new CLA-400 studio reference amplifier built ‘the old-school way’


14 February 2022

Avantone announces the follow up to Chris Lord Alge collaboration CLA-200 amplifier, the CLA-400 studio reference amplifier, a classically-designed Class A/B amplifier to bring about a dynamic, high- output, high-resolution, full-range system designed to be paired with large passive monitors.

The CLA-400 can generate over 400 watts per channel into an 8-ohm load, a good fit for medium to large passive monitors in a studio environment. Avantone Pro paid particular attention to creating an amplifier in the traditional studio style, with ample analog VU meters, high-quality Japanese components, and a serious toroidal transformer linear power supply, as well as implementing a classic bipolar transistor design delivering a robust bottom end. Extremely low distortion, steady performance under harsh conditions, and open and transparent sound attributes all combine to make the CLA-400 an obvious choice for discerning studios seeking maximal dynamic range.

The CLA-400’s convection-cooled design allows for silent operation, allowing easy install in control rooms without fear of introducing unwanted noise. In addition, the amplifier can run at one-third power without thermal fault.

Tech specs:

  • 8Ω stereo power (1kHz): 360W
  • 4Ω stereo power (1kHz): 540W
  • 8Ω bridge power (1kHz): 760W
  • Slew rate (at 1kHz): 28V/us
  • Input sensitivity (1kHz): 0.775V (0dBU)
  • Total Harmonic Distortion (1kHz): <0.1%
  • Intermodulation distortion (at 10% rated power 1KHz): <0.1%
  • Crosstalk: -70dB
  • Frequency response: 20Hz-20kHz +/-0.5dB
  • Frequency response: 20Hz-20kHz +/-0.5dB
  • Input impedance: 20KΩ(balanced)/10kΩ (unbalanced)
  • Damping factor(100Hz, 8Ω): 250
  • Signal-to-noise ratio (A Weighted): >103dB



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Issue 87